Leominster experiences a relatively cold winter, with temperatures often dropping below freezing from January to March, averaging around -2°C. As spring arrives in April, temperatures gradually rise, reaching averages of 9°C by the end of the month. Summer months bring warmer temperatures, with June and August being the warmest, averaging highs around 22-23°C. Autumn is mild, with temperatures gradually cooling down from September to November, before dipping back into winter's chill in December.